Spain is famous for its weather, Benidorm, Spanish food, it's football team, Barcelona, and basically being a rather sunny place overall â none of these descriptions are incorrect, and in fact they are all entirely true!
As the temperature of the air increases its density decreases. Therefore the thrust produced by the engine decreases. As the air pressure increases, its density increases, causing thrust produced by the engine to increase. Altitude has a double effect on thrust. As the altitude increases, the air becomes colder and denser, up to the beginning of stratosphere. This causes the thrust to increase.
In the stratosphere, the temperature increases with increasing altitude as the amount of ozone-absorbing ultraviolet rays increases. In the mesosphere, temperatures decrease as altitude increases and can reach -194 degrees Fahrenheit. By contrast, temperatures in the thermosphere can reach over 2,700 degrees Fahrenheit. Learn more about Atmosphere